Docking appliance



J. NIEBERDING.

DOCKING APPLIANCE.

APPLlCATlON FILED SEPT. 14, 1920.

l ,39U,056, Patentedfiept. 6, 1921.

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MARYLAND.

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Specification of Letters Patent.

Patented se t. e, i921.

To all whom it may concern:

e it known that I, Josnrri NIEBERDING, a citizen of the United States, residing at Baltimore city, in the State of Maryland, have invented a new and useful Docking ppliance, of which the following is a specication. My invention relates to docking appliances and has 'or its object the providing of improved means of cleaning vessels while being docked.

A further object of my invention is the providing of improved staging and means of hand ing the same in dry dock operations.

IVith the foregoing and other objects in view, my invention consists of the novel construction, combination and arrangement of parts as hereinafter specifically described and illustrated in'the accompanying drawing, wherein is shown the preferred embodiment of my invention, but it is understood that changes, variations and modifications may be resortedto which come within the scope of the claims hereunto appended.

In the drawing of the herein described embodiment of my invention, Figure 1 shows an outline view in elevation of a floating dry dock with a vessel on the same and my improved docking appliance in position for cleaning or painting thevessel. Fig. 2, is a plan view of one section of the staging, and Fig. 3, is a view in elevation of one section of the staging.

Similar numerals refer to similar parts throughout the several views.

In docking a vessel or hauling her out on a railway, it is desirable to provide means to enable the men in cleaning the vessel to be at about the surface of the water as the same lowers on the side of the vessel. Sometimes this is accomplished in a crude way b rafts or floats. After the vessel is docked or hauled out on a railway, trestles or other supports are brought into place and a staging built to enable the men to clean or paint the vessels bottom. This is clumsy and costly.

1, is an outline section of a floating dry dock, but so far as my invention goes, it might be an outline section of the cradle of a railway, as the relative position of the vesmy improved would be the same in either case. 2, is a vessel docked or being docked. 3, is a staging derrick pivoted or hinged at 4 near the side of the dock or cradle and arranged to docking appliance swing up to the side of the dock or cradle or out against a vessel. 5, is a derrick tackle for handling the derrick. 6, is a staging handled from near the end of the derrick by block and falls 7. Staging b is provided with guard rail 8.

tagings 6 may be of any convenient length; in large docks 30 foot lengths have been found convenient; The derricks 3 are conveniently placed along the dock to handle the staging. Derricks 3 are of suificient length ordinarily to support the staging above the water level quired by the vessel to be docked when the derrick is resting against the side of the vessel after the vessel has taken the keel blocks.

It has been found that the derrick may conveniently be made of pipe provided with a hinge or swivel at its lower end and curved and provided with wood, fender 9 at its up- 1 and near its upper end having link to support block and falls 7 and connecto attach derrick tackle 5. Derrick is most conveniently handled from on top of the sides of the dock. Block and falls 7 may be lowered away as the water recedes, by the men working on the staging.

have not attempted to minutely describe the dock, blocking, etc, as that is old and well known, and the drawing amply illustrates the same.

In this specification and claims, when the term dock is used, the appliance upon which the vessel rests while being taken out of the water is floating dry dock, or a graven dock in which the vessel rests and the water pumped out, and when the term docking is used it is meant the relative position of the vessel and the surface of the water relatively lowering.

aving thus described my invention, what I claim and desire to secure by Letters Patent is- 1. In a docking appliance, the combination of a member, means for pivoting one end of the said member to the floor of a dock, means operable from the top of the dock wall to adjust said member relative to end of the said art of a dock between the maximum polnt 01" submerslon at member to a submergible the side and the objectbe- 1 mg docked, means operable from the top of the dock Wall to suspended from t adjust said member rela- Witnesses:

" tive to a member belng clockedfa stagmg he upper end of said memher 5nd means operable froln seitl staging for adjusting the vertical position thereof.

JOSEPH NIEBERDING.

ADDIE B. DEERING, WILLIAM W. VARNEY. 

